[Identity Erasure, Latex, Feminization, Brainwashing]

"Thank you for inviting me over, Rito. I know it's only been a couple of weeks since we met at that convention, but you've really taught me a lot! Especially where I still need to work on my cosplays..."

"It's okay, Mako. Really, it is. I know you were really enthused about trying to dress up like Ritsuka, but your frame just doesn't fit that boy."

"Yeah, but it's not that feminine, Rito. I know you want to see me dress up as one of the girls, but let's just try one of the younger boys first. Okay? Then we can see if you're right."

Two young men were currently spending a bit of time together over the weekend. They had planned to be together for a total of three nights, and then Mako would have to head home and focus on his studies. After all, both of them were supposed to be quite busy around this time of year.

The one that owned the house where they were staying was Rito. Rich lad who had practically inherited his fortune and yet made sure to invest it while still leaving a lot of money for his own use. It was why he was known as one of the whales that kept Fate/Grand Order alive, especially with his esteemed collection of servants. Especially the box that was full of Okita Souji and her various alternative versions.

His guest and recent friend, on the other hand, was a boy that had just started cosplaying. He had been playing Grand Order for a while, and as such really wanted to try and look like the boys that he had been playing as. He preferred the ones that were a bit more manly, despite the fact that he was the very definition of a femboy. He wouldn't look too out of place cosplaying somebody like the Prince of Lanling or Astolfo, after he had put on a wig to try and hide his natural brown and messy hair. But instead he tried the slightly manlier Main Character, who he ultimately didn't really look like due to how feminine his frame was.

But it was that feminine frame that had drawn Rito to him. Rito had seen him during one of the local conventions, and struck up a conversation with the feminine boy that had pulled him in. And while he did his very best to hide his true intentions, he did imply that he would look much better dressed up as a girl rather than a boy. Something that Mako had to gently turn down, even if he had a ton of respect for Crossplayers. He just wasn't the type to try that thing out.

"Well, I made preparations for the cosplays that you'll be trying out." Rito said, carefully taking a sip of his own tea. All while letting his cheeks flush a little red. He may have added a little too much sugar, this was hardly tea at this point. Oh well, sugar helped him keep focus. "I'm sure you'll love them, once you get a good look at them."

Mako giggled. He trusted Rito. Not just because he had helped him correct his last few cosplays, and personally handled all the necessary purchases that would let him dress up as Alexander for the sake of a little cozy photoshoot. But because he was just a really nice guy. "Better not be one of those girly cosplay, Rito. Otherwise I'm gonna be reaaaaally maaaaad!" The feminine boy chimed, all while taking a sip of his own tea.

Hmmm... It was really sweet. And yet there was this strange after taste. Like something was trying to tug at his mind. Weird, what was in the tea..? "Hey, Rito..? What did you-"

And just like that, the boy passed out mid-sentence. All while Rito reached over and quickly caught the cup before it splashed out its contents and ruined his very expensive and extremely soft carpet. All while he smiled from ear to ear as usual, giggling as he looked upon that feminine boy that had fallen for his tricks and lies...

"Oh, Mako. You really do look adorable. Let's make sure you live up to everything that you really can be." He chimed, as he slowly put away the cups that were partly full of tea, and partly filled with a powerful sedative that was supposed to be diluted by the excessive amount of sugar that he had poured into both cups.

Mako wouldn't mind the makeover. He was sure of it. After all, to cosplay as who he was really meant to be was exactly why he had been invited over...

---

Mako's eyes slowly fluttered open. And all that he saw was a black background. A black background that was eerily familiar. Especially as a certain white little fluffy creature started to dart across the background...

"F-Fou..?"

All that Mako could see was that dog-like creature running along the otherwise empty background. And his mind exclusively focused on that, all while he just sat there, completely unaware of what was happening around him. And what was happening to him in general. Because why would he focus on anything except for the nice dog..?

Rito smiled. All while he watched his dear friend currently sit straight up in such an attentive fashion, even though you could clearly see the fatigue still having a firm grip on his body. It was adorable, especially since his expression was decidedly lax despite the amount of gear that was currently covering his face.

While Mako had been asleep, Rito had gone ahead and made sure that he was prepared for the main part of their new little relationship. He had equipped him with a headset and a visor, both meant for VR gaming. Except he wasn't going to be gaming. No, the equipment was being used to beam subliminal messages and particular programming straight into his brain. All while the deceptive youth grabbed ahold of a little syringe. One that still wasn't empty...

"You'll be perfect soon, my dear. My sweet and beautiful Okita..."

This was the goal that he was trying to achieve. He was trying to make his dear Okita Souji a reality. Not the actual real life Okita, but the depiction from Fate/Grand Order. The one that he had obsessively collected as soon as he saw her available in the Gacha. Ah, the way that she casually joked around and yet could get serious on a dime had managed to seduce him to a point where he just couldn't think about anything but her.

As soon as he had met Mako, he realized that he finally had the chance. Mako had the exact kind of body that fit her description. Sure, he didn't have the proper bust, but Okita wasn't really that busty in the first place. It was her legs and her feet that served as her charm point, and Mako definitely had those down. All he needed to do was to fill the role and wear the outfit, then the two would be the spitting image of one another. A character that he loved, brought into the real world.

Of course he had to do more than just dress him up just like Okita before Mako would be perfect. A combination of the headset and the drug that Rito was currently injecting right into his wrist would serve to slowly but surely erode everything inside of the youth's mind, all so the programming that was being pumped into him could take its place. All so he could forget everything about being male, and think that he had been born a female. Born as Okita, not as Mako...

Mako wasn't aware of what Rito was doing. He was barely even aware of anything at all. He just watched the familiar silhouette of Fou darting across that empty background. All while it felt like something was... Slowly but surely... vanishing...

It was like... The more he watched Four run, like something was trying to load inside of the image in front of him, the more his thoughts and his memories started to run away from him. And yet... What were they, anyway..?

Mako's head lulled forward a bit as the running silhouette erased more and more of his mind. He could barely even remember his name at this point. He was... Ma... Ma, right? Yeah. That seemed to be his name. And he... Well, he really liked watching Fou run. Run and run, until...

His head truly started to lull as more and more vanished within him. There were barely any scraps left of Mako's mind at this point, only barely held together by the running silhouette of Fou. It was the only thing keeping him aware that he was supposed to be playing a game. So if that silhouette vanished, so would the remaining thoughts that bound him to this persona. And if that was the case, then who would he be..?

Just like that, Fou vanished. And every little bit of Mako vanished as well, leaving behind a hollow husk of a boy that was currently on the verge of collapsing fully. All that he could do was just sit there. Vacantly staring into the empty void within his headset. Vacantly breathing and keeping alive, and not much more than that...

Rito smiled. It was rather cruel to erase Mako like that. But for Okita, who he craved more than anything else in the whole world, it was the least that he could do. And thus, all he had to do to bring her forth was change out the brainwashing track within the headset, and...

Voices started to flood the empty husk's head. Voices that belonged to a particular girl. He did not recognize them. They were all in Japanese, after all. But they sounded nice. They made him feel fuzzy inside. All while he kept listening. All while the view in front of him seemed to depict a much more serene scene.

It was the scene of an oriental garden. With the sakura petals slowly drifting towards the ground, all while he... She, slowly looked at herself. The empty husk seemed to understand what she was looking at, especially as that kimono clung to her body.

The voices reached a fever pitch, and she started to understand. That's right. That was her voice. Okita Souji's voice. That wonderful voice that was always full of energy. Heh, she liked the sound of her own voice. If Nobunaga ever heard that, then-

A moan left her lips as the husk's brainwashing was ever slightly interrupted. Its understanding of its current self was disconnected, all thanks to the masculine fingers rubbing up against the very obvious tent in its pants...

"Master is here, Okita..." Rito whispered into the husk's ear, all while his fingers slid along the bulge in his former friend's pants. He needed to make sure that a connection had been made inside of the husk's otherwise empty brain. It needed to understand that his voice was that of Okita's Master. And as long as Master talked to her, then Okita should feel good...

It worked rather well, as Rito could feel the cock growing harder as he stroked it. All while Okita cried out and gasped in pleasure. Because she thought that her cock was getting the pleasure that it needed. Because she thought that she was being rewarded.

Rito couldn't help but smile as Okita responded positively to his teasing and the way that he conditioned 'her'. Even though they both still had a long way to go before they were well and truly done with this part of the programming, that didn't mean that he couldn't enjoy the process. And indeed, it was one of the most entertaining parts.

"Cum for Master, Okita."

A single command, and Okita did as was asked of her. Even though it wasn't the most intense orgasm, there was a distinct amount of cum that leaked right through the girl's boxers. Right onto her Master's hand, allowing him to smile even further.

If this was what she was like during the first few hours of her 'manifestation', then he couldn't wait to see what she was like once she had been fully programmed...

---

Okita blinked a little as she slowly opened her eyes. It was like she had been sleeping for eons. If not... Okay, she had just been sleeping for a long time. If she tried being overly dramatic, then she'd sound like Nobunaga. And then she'd probably try to conquer Japan. Good grief.

Though as the 'girl' slowly looked down at herself, there were a few things that started to stick out. Firstly, she was wearing... Latex? Like, she was wearing a pair of black latex panties that nicely cupped her bulge, and a set of thigh stockings that were extra shiny, and a set of long gloves that went all the way up to her elbows. Then on top of that, her Haori was extra shiny, as if it had been made out of some sort of rubber or something. And finally, as she reached up to double check her ribbon, even that was stretchy and shiny.

What in the world had happened? And for that matter, where was she? She wasn't in Chaldea, she wasn't even in one of Nobunaga's myriad of stupid singularities! Where was her Master? There were so many questions on her mind, and yet she had the answer to exactly none of them. A frustrating experience for sure, especially as she started to reach for her blade...

Even her blade was gone! She was defenseless! Okay, that was a lie. She knew hand to hand combat, so if there was some sort of creep that wanted to molest her, or worse, then she could swiftly defeat him. Honestly, they were lucky that she was just going to knock them out if they tried anything. If she had been Tamamo, then-

"Good Morning, Okita."

Okita blinked a little as she heard that voice. It was... Familiar and warm. Almost as familiar and warm as her Master's. But it couldn't be her Master's voice. There was absolutely no way that it could be his voice, because this wasn't Chaldea. So she kept her guard up, even as a young man started to enter the room.

"I don't know who you are, but you're not going to get away with what you've done." Okita said, glaring at the young man. It didn't take a genius to figure out that he had a hand in redressing her like this. So she was going to make sure that he didn't try anything. "Give me back my weapons, and return me to my Master!"

Rito smiled. Indeed, she was just as hostile and as volatile as he expected her to be. And that was why he stepped closer and slowly held up the back of his hand, as if he was about to use a Command Seal just like he would whenever he needed to revive his Servants. "Okita. You remember your Master, don't you?"

Okita couldn't believe it. Why was there a set of Command Seals on this boy's hand? More importantly, why were they her Master's-

Her eyes widened as a shock of pure pleasure rushed through her. She could feel her heart slamming against her chest. She could feel her bulge growing harder in her panties. And she could feel the sheer delight of looking at the young man completely overwhelm her. Ahhh... Ahhh, what a fool she was. What a complete fool she had been...

Just as quickly as the 'Command Seal' had worked its magic on the brainwashed 'former boy', a pair of hearts appeared in Okita's eyes. And she quickly rushed into the arms of that loving young man that had called out to her, as she quickly hugged him and kissed him like she had always been one of his dear lovers...

"Oh, Master. I'm so glad you're here..." Okita giggled as she started to nuzzle up against him. Almost like they had been lovers for years. She was the first one to answer his calls, so of course they had been together for that long. "Do you want anything, Master? You know that you just have to ask, and-"

Rito didn't let her finish before he put his lips up against hers. Kissing her and letting his love pour through her, all while she trembled and panted and moaned. And her panties started growing a little wet from how hard she had gotten and how much precum started to leak out through the very tip of her bulge...

"I want you, Okita. You know how I want you too, don't you?" Rito said, as he carefully reached up and brushed a hand through her hair. All while smiling as lovingly and as wide as ever...

Okita nodded as she felt her heart fluttering in such a loving and devoted way. Ah, how could she have been so blind. Of course her Master would want that. She didn't even think about how much he could've wanted that, especially since... Oh, she was just overthinking all of it. They hadn't bonded like this for her to worry and fret.

As soon as he let go of her, Okita slowly bent over and got down on all fours. All so she could reach down and tug her panties out of the way, revealing her incredibly tight and seemingly virgin anus. Even though she didn't realize that it hadn't experienced the kind of love that she thought it had. "It's yours for the taking, Master. Be as gentle and as rough as you'd like-"

He took the initiative and practically slammed his cock right into her. And naturally, that was all that she needed to feel before she was completely and utterly enraptured by the pleasure that poured through her. Evident by the way that her bulge started to drool cute bubbly precum onto the floor, while her Master thrust into her again and again...

Ah, to be with Master. It was such a wonderful experience. She wouldn't ever want it to end, if he continued to love her this much...

---

"My my, Master... You're awfully pathetic when it comes down to it, aren't you..?"

Truth be told, Rito wasn't satisfied with just one side of Okita. That was why he had bothered to go through the effort of programming several versions of her into the husk's mind. And the version that was currently in control was the most dominant one. The one that acted more like a Master than the Master that was supposed to command her.

Rito trembled as he felt the chains rub up against his body. He knew that he should've prepared softer ones, and yet having this dominant version of Okita hurt him like this was... Well, it made him even more erect than he had been prior.

"Okit-"

Rito cried out as he suddenly felt a whip crack against his back. All while his dear Okita licked her lips and grabbed ahold of his chin, firmly pushing her fingers into his cheeks to make sure that he felt the subtle pain of disappointment. "That's not my name, Master. You know what you're supposed to call me."

"M-Mistress."

Okita smiled as she heard that. And then she gave him a soft kiss on the cheek, to make sure that he got a little sweet relief as a reward for being a good boy. Being a dominatrix meant equal measures of pleasure and punishment, and he had earned the slightest bit of pleasure...

Though just looking at her was its own pleasure. Okita had let her Hakama fall to the floor when she first entered this mode, now wearing what could best be described as a one-piece dress with a bunch of straps that dug snugly into her body. All while pressing her own bulge in against her crotch, which made it much easier to put on accessories and tools.

"Good Boys that please their Mistresses get a reward like no other, Master." Okita chimed as she gently held his leash with one hand and reached towards her favorite toy with the other. She didn't need her whip at the moment, especially not since her dear Master and Pet were trained far better than they would admit.

Admittedly, Rito wasn't exactly on board with every part of the dominatrix experience. He was still a newbie in regards to all the parts of BDSM, and while he had enjoyed making her an extra submissive girl the night before, as well as trying out the many different roles that she could play, something about her current role just made him nervous.

Especially as he watched her put on that strap-on that he had prepared. Now that he was about to take it up the ass, he was a little nervous. He was a virgin, and... While he had definitely dreamed about being pegged by Okita, he still wasn't quite certain that he was ready for it.

"Ufufufu... You're adorable when you look at me with those eyes, Master." Okita giggled. Ah, the sight of her sweet Master looking like he was about to cry out in fear... It made her tremble all over. So much so that she let go of his leash for a moment, all so she could secure that thick strap-on. She needed to make sure that he got his reward, and-

Rito's body moved on its own accord. Crawling away like a scared little pupper, all while his ass stuck up into the air. He was already trained to such an extent that his mind and his body couldn't agree on what they needed to do. Part of his rational mind and fearful self wanted to get away, and his trained body wanted him to get hilted into by his dear Mistress...

"Now, what do you think you're doing, Master..?" Okita said as she grabbed his leash, stopping him in his tracks as she came closer. "You're not trying to run away from Mistress, are you..?" Her voice dropped a couple of octaves. All while that Yandere part of her personality popped up, one that he now realized he probably shouldn't have implemented...

"N-Nobu! Nobu nobu!" Rito cried out in desperation. The safeword that he had programmed into her to return her to normal and then drift off to sleep was the infernal verbal tick of the minions of Nobunaga. As long as he sounded like one of them, Okita should-

A mild groan left his lips as he felt his face press against the ground. All while Okita just chuckled and pressed her strap-on against his ass. "Aahhh, you're an awful pet, Master. You shouldn't sound like those things... They just make my head hurt..." The Yandere Dominatrix that Okita had become didn't respond favorably to that safeword. Nor did she intend on stopping. "But it's okay... I can train you... And then you'll never leave me..."

Rito cried out in a mixture of pain and pleasure as that thing slipped right into him. It felt good. Way better than he expected. And yet it also felt awful, because... Because...

A bit of drool ran down his chin. Ah... Ahhh... He had no escape, and he could already feel the pleasure overwhelming him. Mistress had done far too good a job at training him. So much so that he whimpered like a tamed puppy, all while he felt her thrusting in and out of her...

"That's more like it, Master... Aaahhh... We'll be together forever, as Mistress and Pet... Doesn't that sound so wonderful..?" Okita giggled as she thrust with a slow yet rough pace. All to ensure that he wouldn't be able to get away or ignore the sensations spreading through him.

He thought that he could make Okita his, all by turning a fellow boy into a permanent crossplayer. And here were the fruits of his efforts. A Dominant and extremely obsessed version of the girl he loved, overlaid on top of the boy that had trusted him. Currently hilting into him and making sure that he understood his position in this relationship...

The tamed puppy could only whimper in delight as he started to cum on the floor, as he reaped what he had sowed...